Pneumatic valve-action.



lNo. 690,38I, t Pateted Dc. 3|, BUI. f

f J. WIESEB. v

PNEUMATIG VALVE ACTIUN.'

* (Application led Apr. k1S, 1901.)

(NoModel.)

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" D *mm1 A llnrr'io ST1-arne- JOSEPll WIESER, OF

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PNEUMATlC VALl/EACTiONf.

5 seno-le NATION forming part of Letters Patent No. 690,351, datedDecember 'e1"', 1eo1. A f

all whom, Lt may corto-e771,.- Be it known that l, JOSEPH Winsen, acitizen of the United States ,residing in New York,

which the pneumatic valve-action is under the control of a perforatedmusic-sheet.

The main objectof the ,present invention 1 5 is to provide a pneumaticvalve-action which will respordinstantly when a perforation in themusic-sheet is open to one of the passages of the tracker, 'so that thepiano, organ, or other instrument will be played in proper 2o timewithout any hesitation.

A furtherlobject is :to render the mechan,

ism more compact.

My invention consists of a pneumatic valveaction comprisingythecombination, with the 25 main valves controlling the actuating-pneumatics, of auxiliary valves and means for actuating the main andauxiliary valyes, such means comprising tracker-passages leading, on theone hand, to the diaphragme of the 3o auxiliary valves and, on the otherhand, to the diaphragme of the main Valves, whereby when vatmosphericair is permitted to pass through the perforation of the music-sheet Aandthrough the trackerI and tracker-tubes 5 the automatic auxiliary valveswill instantly shut ott the flexible diaphragme of the main l valvesfrom the lower suction influence,y allowing the exible diaphragms of themain valves to rise and to thereby instantly open 4o the main valves, sothat the pneumatics will 'instantly operate on the actuating mechanismof the piano or other instrument, all as hereinafter described and thenclaimed.

-ln the accompanying drawings, Figure l is 45 a vertical transversesection through the Valve-chest and a pneumatic, the parts being innormal position and connected with a pianoactiong and Fig. 2 is avertical longitudinal section of the valve-'chest and its containedchannels B B B2,

.pplication filed April 13,1901. vSerial 'N0-'55,642- (Nomodel l parts,showing one set ot valves and the c'or- 5o' responding pneu matics inactuated-positiom Referring to the drawings, 'A indicates aAvalve-chest, which is constructed offsuitable parts, so as to 'providelongitudinal suctiony which are alljin4 communi 55 cation with the mainsuctionpipe` C, wliich: leads to the suc'tion or exhaust chest. `(Notshown.) Above the said suction-channels B' i B'B2 is arranged a seriesof valve-chambers B4, which lead7 by means of ports d, to the 6oVpneumatics D, that are fixed in any suitable V manner on top of thevalve-chest A. These pneumatics are connected either directly with thevalvesof the soundingtubes in case the device is used in connectionwithan organ, or '65. each pneumatic may be connected witlija lever bymeans of a link e, which leverlspivoted at e to arail E and is connectedatene end by means of a link E2 with the piano-action cc.

In the valve-chambers@-134 are arranged a "o number of flap-valves F,which controlthe ports f that connect -the channel B Withthe valvechambers B, and which main flapvalves F are preferably provided withlugs or projections f at the back,rupon which re'st the 7 5 f ree endsofthe contiguous ilap-valvesF', that control the portsj'z, arranged underthe pneumatics,and which lead to the outer air.v Nor- -mally the twovalves F F' are in the position shown in Fig. l, in which position portfis 8o closed and the por-t f2 is open, so thatatmospheric air may passthrough the said port f2 and ill the pneumatic D controlledL thereby.The ports fare crossed by` suitableI guidepieces f3, in which are guidedthe's'tems g of heads g, which rest upon the flexible diaphragms'G, theedges of which are glued 'for otherwise fastened in thewell-known mannerin the suction-channel B.

Arranged below the diaphragme-G in the 9o suction-channel B andcommunicating with the under sides of the said flexible diaphragms bymeans ot' ducts t' are anumber of auxiliary automatic or flap valves Il,which ar`e normally open, so that the ducts will permit the 95diaphragms G to be subjected to the suction/ of the channel B. Theseauxiliary automatic valves H rest upon stems 7i, which are guided in thestock ol the valve-chest or in anyother suitable manner between thechannels B B2. Each ofsaid valve-stems h has coiled around it anactuating-spring h', which bears upon the head h2 of the valve-stem atone end and 'against the stock of the valve-chest at the other end. Eachhead h2 rests upon a ilexible diaphragm h3, said diaphragme h3 beingarranged Within the suction-channel B2 and being subjected to suction attheir under sides through the medium of duets j, which communicate bymeans of portsj with a suctionchannel B5 in the valve-chest. The 'porlsjare opened more or less by means of needlevalves .l for regulating theescape of air through the suction-channel B-5 and to retard or expeditethe return of the diaphragme h3 into normal position after vthepneumatic 'valve-action has been opera-ted The ducts Whenever a4perforation in the music-sheet establishes communication between one ofthe tracker-tubes K and the outer air, the atmospherie air enters thebranch passages 7c 7c beneath the diaphragm 70"' and, against theexhaust or suction on the upperside of the dial phragm, throws up thediaphragm into opposite direction, as shown in Fig. 2, causing the sameto act upon the valve-stem head Wand to close the valve H, so that theduct z' has no communication with the suction-channe1 B.

' Y As soon as the valve II is closed, according to the operationpreviously described, the atmospheric pressure admitted through thepassage k is fully elfective to raise the diaphragm G, causing the mainvalve F tobe raised, so as to open the port d ofthe pneumatictothesuction-.chamber B, therebypermilting atmospheric pressure to deflatethe pneumatic D, which iu turn instantly actuates the sounding devices.The atmospheric air being shut off from the tracker tube K, the suctionthrough the ports j will create an equilibrium above and below thediaphragm h3, causing the automatic valves Il and diaphragme to return4to normal position.

By operating the main valves of a pneu. 'matie valve-action by means ofthe auxiliary automatic valves,farranged and operating as described, themain valves are enabled to'be instantly opened and closed, therebygreatly 'improving devices of this class.

`What l claim as new is- 1. In a pneumatic valveaction, the combination,with the main valves controlling the actuatiug-pneumatics, of auxiliaryvalves, and means for actuating the main and auxiliary valves, suchmeans comprising trackerpassages, leading on the one hand to thediaphragms of the auxiliary valves, anden the other hand to thediaphragms 'of the main valves, substantially as set forth.

2. In a pneumatic valve-action, the combination, of a valve-chest,provided with aplurality of suetion-channels extending therethrough,valve -chambers, niais valves arrangedin said valve-chambers and adaptedto control the actuation of the pneumatics, and flexible diaphragmearranged in one of "said suction-channels, for opening the main Avalves,of auxiliary valves arranged in at other of said suction-channels,lieirible dia phragms arranged in still another' of saidsuction-channels, foraetuating the auxiliary valves, and tracker oratmospheric-air passages,4 leading on the one hand to the under sides ofthe .flexible diaphragme of the main valves and directly to the saidauxiliary valves, and on the other hand to the diaphragms of theauxiliary valves, substantially as set forth.

3. In a pneumatic valve-action, thecombi nation, with a valve-chest,provided with a plurality oflsuction-ehannels extending therethrough,valve chambers, main valves arranged iu the valve-cham bers andcontrolling the suction to the pneumatics, flexible diaphragme arrangedin the uppermost of said channels` and means acted on by said diaphragmefor actuating the main valves, of auxiliary valves arranged in the nextfollowing suetion-channel, flexible diaphragme ai vranged in the next'suction channel, and adapted to actuate the auxiliary valves, andtracker or atmosphericair passages, leading on the one hand to the undersides of the flexible diaphragms of the main valves and to the auxiliaryvalves, and on the other handto thediaphragrns of the auxiliary valves,substantially as set forth.

In testimony that I claim the foregoing as my invention l have signed'mynamein presence ol two subscribing witnesses.

.Tosi-BPH Wissen. Witnesses:

PAUL GonrsL, Gmo. L, WiIEsLocK.

IOC

